The environment carries as much weight as the skill.
Catalog what already works: a reliable cousin, a church community, a manager who has been flexible, a phone with alarms. Supports reduce the skill burden and often produce faster wins than teaching alone.
Cultural context shapes what counts as success. A goal of 'independent living' may mean a separate apartment for one participant and a private room in a multigenerational household for another. Write the goal the participant would recognize as theirs.